.content{
    width: 750px;
    height: 500px;
    background-color: beige;
    margin: 50px auto;
    border-radius: 30px;
}
h1{
    text-align: center;
    line-height: 70px;
}
.submit{
    width: 300px;
    height: 50px;
    margin: 20px auto;
    display: flex;
    flex-direction: row;
    justify-content: space-between;
}
.submit input{
    width: 200px;
    height: 20px;
    margin: 20px;
}
.submit button{
    width: 50px;
    height: 20px;
    margin: 20px;
}
.list{
    width: 500px;
    margin: 40px auto;
}
.list-style{
    margin: 0 auto;
    padding: 0;
}
.li-style{
    width: 300px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    margin: 10px auto;
}
.completed{
    width: 300px;
    height: 30px;
    display: flex;
    justify-content: space-between;
    background-color: #ccc;
    color: #fff;
}
.completed svg{
    width: 20px;
    height: 20px;
    margin: 5px 5px;
}
.completed p{
    width: 240px;
    height: 30px;
    display: inline-block;
    line-height: 30px;
    text-decoration-line: line-through;
    margin: 0;
}
.uncompleted{
    width: 300px;
    height: 30px;
    display: flex;
    justify-content: space-between;
    background-color: #fff;
    color: #000;
}
.uncompleted svg{
    width: 20px;
    height: 20px;
    margin: 5px 5px;
}
.uncompleted p{
    width: 240px;
    height: 30px;
    line-height: 30px;
    display: inline-block;
    margin: 0;
}